Launching today
ChallengeUp , The LinkedIn for Doers
Group challenges with daily proof and a score to lose
10 followers
Group challenges with daily proof and a score to lose
10 followers
Most habit apps track you alone and quietly die after week 2. ChallengeUp makes consistency social: join group challenges, post daily photo/video proof your teammates actually see, and build streaks together. What's different: your Challenge Score a public trust score earned by finishing what you start (completion rate, peer ratings, check-in consistency). Quit and it drops. Plus GPS-based challenges near you for meeting doers in real life. Free, English & German.
Hey Product Hunt! 👋
I built ChallengeUp because every January I'd start a challenge with friends in a WhatsApp group — and by February the group was dead. No proof, no stakes, no way to see who actually showed up.
So I made the app I wanted:
🔥 Group challenges with daily proof — photo/video check-ins your teammates see, not a private checkbox
🏆 A Challenge Score that follows you — finish challenges and it climbs, quit and it drops. Your reputation as a doer, visible on your avatar everywhere
📍 Challenges near you — find people doing 30-day gym or running challenges in your city, IRL
🥇 Weekly leaderboard + medals — earned by consistency, not talent
It's free, on Android + web, in English and German. I'm a solo founder and shipped this myself — every piece of feedback here genuinely shapes what I build next.
What's the one challenge you keep restarting and never finish? That's exactly who this is for. Ask me anything! 🚀
How does the Challenge Score actually recover if you have a bad streak or quit a few challenges early on?
@topraksy7z Good question, and it was honestly one of the trickier design decisions. The score is ratio-based, not a permanent record , it's mostly your completion rate (finished vs. quit), plus peer ratings and check-in consistency. So nothing is held against you forever: if you quit 2 of your first 3 challenges you're sitting at a rough completion rate, but finish the next four and you're suddenly at 6/9 , the early quits just get diluted by everything you finish after.
@topraksy7z There's also a small bonus for every 5 completed challenges, so consistent finishers keep climbing even after a rough start.
The photo proof requirement actually kept me showing up when I wanted to skip, which is rare for me. Curious to see how the public trust score feels over time though.
@sefa1270776 This made my day, thank you , "kept me showing up when I wanted to skip" is the exact sentence I built this around. The photo proof thing sounds like a small feature but it changes the psychology completely: a checkbox lies effortlessly, a camera doesn't.
On the trust score over time , honest answer, I'm watching that too. The design intent is that it becomes something like a gym buddy's reputation: after a few months, a 75+ score should mean something when you're deciding who to start a 30-day challenge with. Whether it actually feels that way at scale is something only real users over real months will tell me.
The challenge score idea is really clever, love that quitting actually costs you something. One thing I'd love to see is a way to bet on yourself with friends, like putting $5 in a pot that goes to charity or a winner's choice if you break your streak, gives it even more teeth than just a public number.
@nyerdelen18606 Ha, funny you say that , money stakes were in my very first notes for this app. I ended up shipping reputation stakes first for two reasons: cash pots attract people who want to win money more than people who want to build habits and the payments/legal side of pooled bets in the EU is its own monster 😅
It's on the list, genuinely. For now the bet is your public score, which costs nothing but stings surprisingly hard when it drops. Would you actually put money in with friends if it existed? Asking because I'm trying to gauge if people would really use it or just like the idea.